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set prompt in sh

 
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# 15  
Old 03-25-2003
Check this out: http://www.unixguide.net/unix/faq/2.4.shtml

Bourne Shell (sh):

If you have a newer version of the Bourne Shell (SVR2 or newer)
you can use a shell function to make your own command, "xcd" say:

xcd() { cd $* ; PS1="`pwd` $ "; }

If you have an older Bourne shell, it's complicated but not
impossible. Here's one way. Add this to your .profile file:

LOGIN_SHELL=$$ export LOGIN_SHELL
CMDFILE=/tmp/cd.$$ export CMDFILE
# 16 is SIGURG, pick a signal that's not likely to be used
PROMPTSIG=16 export PROMPTSIG
trap '. $CMDFILE' $PROMPTSIG

and then put this executable script (without the indentation!),
let's call it "xcd", somewhere in your PATH

: xcd directory - change directory and set prompt
: by signalling the login shell to read a command file
cat >${CMDFILE?"not set"} < cd $1
PS1="\`pwd\`$ "
EOF
kill -${PROMPTSIG?"not set"} ${LOGIN_SHELL?"not set"}

Now change directories with "xcd /some/dir".
 
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LEARN ABOUT HPUX

pam_get_user

pam_get_user(3) 					     Library Functions Manual						   pam_get_user(3)

NAME

       pam_get_user - PAM routine to retrieve user name.

SYNOPSIS

       [ flag ... ] file ...  [ library ... ]

DESCRIPTION

       is  used  by  PAM service modules to retrieve the current user name from the PAM handle. If the user name has not been set, via or then the
       PAM conversation function will be used to prompt the user for the user name with the string "prompt".  If prompt is NULL,  then	is  called
       and the value of is used for prompting. If the value of is NULL, the following default prompt is used:

       After the user name is gathered by the conversation function, is called to set the value of

       By  convention, applications that need to prompt for a user name should call and set the value of before calling The service module's func-
       tion will then call to prompt for the user name. Note that certain PAM service modules (such as a smart card module) may override the value
       of and pass in their own prompt.

       Applications  that  call  multiple times should set the value of to NULL with before calling if they want the user to be prompted for a new
       user name each time.

       The value of user retrieved by should not be modified or freed.	The item will be released by

APPLICATION USAGE

       Refer to pam(3) for information on thread-safety of PAM interfaces.

RETURN VALUES

       Upon success, returns otherwise it returns an error code.  Refer to pam(3) for information on error related return values.

SEE ALSO

       pam(3), pam_start(3), pam_authenticate(3), pam_get_item(3), pam_set_item(3), pam_sm(3), pam_sm_authenticate(3), pam_end(3).

																   pam_get_user(3)